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Top Freelance SQL Experts for Hire

Maryam Z.

Health Data Analyst | Machine Learning & Data Science | Healthcare AI & Research
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USD 20/hr
B.S. in Computer Science
Pakistan

I am a Health Data Analyst and Computer Science graduate with a strong interest in health informatics, healthcare analytics and applied artific...

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USD 20/hr
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Francisco José D.

PhD Biologist | Literature Reviews · Academic Research · Scientific Writing · Market Studies
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USD 45/hr
Licenciatura en Biología
Spain

I am a PhD Biologist with over 15 years of university teaching experience and a strong track record in scientific research, academic writing, a...

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USD 45/hr
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Celine S.

Data Analyst | Python, SQL, Data Cleaning & Visualization
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USD 10/hr
Grade 12
Egypt

I am a high school student (Grade 12) with a strong passion for data analysis and a C1 English proficiency level. I hold a DECI Level 2 certifi...

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USD 10/hr
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Dr. Georgy T.

Cornell PhD Researcher | Data Analysis, Survey Design & Academic Writing
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USD 30/hr
BA in Political Science
France

I am a Cornell PhD candidate in Government/Political Science with expertise in social science research, data analysis, survey methodology, and ...

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USD 30/hr
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Dharmendra Singh R.

Bioinformatics PhD | Genomics, NGS Analysis, Structural Bioinformatics, Molecular Docking, MD Simulations, Immunoinforma
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USD 25/hr
MSc
India

I am a PhD researcher in Bioinformatics with expertise in genomics, immunoinformatics, and structural bioinformatics. My work focuses on applyi...

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USD 25/hr
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Catherine F.

Environmental Consultant | GIS & Data Analyst
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USD 40/hr
United States

I am a wildlife biologist, GIS analyst, and environmental consultant with nearly 20 years of experience supporting government agencies, univers...

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USD 40/hr
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Dr. Matt B.

Data Scientist & Applied Statistician | PhD | Experiment Design, Mixed-Effects Modelling, Behavioural Research
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USD 55/hr
PhD
Germany

I'm a data scientist with a PhD in cognitive psychology, 5+ years of experience teaching statistics to undergraduate students, and 10+ year...

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USD 55/hr
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Tomás Ricardo B.

MsC in Physics of Complex systems, currently studying a PhD in Statistics, with multiple published works.
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USD 25/hr
Masters Degree in Physics
Mexico

I am an analytical, problem-solving person. I completed a master’s degree in complex systems physics in the University of Copenhagen. I have...experience in complex systems, machine learning, data science, and stochastic processes, with several publications...

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USD 25/hr
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Dr. Mehak U.

Research Scientist – Machine Learning, PhD in Computer Science
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USD 60/hr
PHD (CS)
Pakistan

Machine Learning Researcher & AI Specialist holding a PhD in Computer Science, with an excellent academic record, working in the field of C...

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USD 60/hr
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Sarah W.

Lover of clinical research, all things data and efficiency
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USD 20/hr
BSc (Hons)
South Africa

A dedicated and meticulous biochemistry and computer science graduate. With over five years experience in clinical research and med comms

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USD 20/hr
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Dr. Mohammed M.

Data Analyst & Chemistry Expert | Data-Driven Insights, Chemical Analysis, Research & Process Optimization
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USD 50/hr
B.Sc. Industrial Chemistry
Nigeria

I am a multidisciplinary professional combining strong expertise in data analysis with a solid foundation in chemistry, enabling me to deliver ...

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USD 50/hr
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Dr. Stefanie S.

Senior Bioinformatician (PhD) specialized in cancer research, Spatial Transcriptomics & machine learning
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USD 30/hr
Masters (Science)
Germany

I am a PhD-level Bioinformatician and Computational Biologist with over 8 years of experience in high-impact cancer genomics (including postdoc...

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USD 30/hr
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Dr. Ryan C.

Medical Writer | Biostatistician | SPSS & Python Data Analyst | Clinical Research Consultant
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USD 20/hr
MBA
Kenya

I am a medical researcher, biostatistician, and scientific writer with extensive experience supporting researchers, clinicians, healthcare orga...

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USD 20/hr
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Majid T.

Scientific Editor and Reviewer
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USD 50/hr
PhD
Canada

I have several years of experience as a scientific editor and peer reviewer for a wide range of high-impact journals and international conferen...

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USD 50/hr
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Dr. Gianina M.

Freelance Geophysicist & Geospatial Data Analyst | Expert in Python & Geodata
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USD 70/hr
Ph.D. in Earth and Environmental Sciences
Germany

I leverage my background in geophysics and programming expertise to power geospatial analyses that advance environmental protection, climate‑ch...

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USD 70/hr
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Vaibhav R.

Applied AI & Computer Vision Researcher | CVPR/NeurIPS | Vision-Language, 3D, Avatars
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USD 40/hr
M.S. By Research
India

I am an MS (Research) student in Artificial Intelligence & Data Science at IIT Bombay, with publications accepted at top-tier conferences i...

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USD 40/hr
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Emily C. T.

Epidemiologist & mixed-methods researcher — study design through analysis-ready data
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USD 100/hr
MS Epidemiology
United States

I'm an epidemiologist (M.S., Icahn School of Medicine at Mount Sinai) who's good at the unglamorous parts of research: cleaning a messy...

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USD 100/hr
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Dr. Katherine P.

Neuroscience PhD | Data Scientist | Quantitative Biomedical Researcher
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USD 50/hr
Ph.D.
United States

I'm a data scientist with a neuroscience Ph.D. and 10+ years of experience extracting insights from complex biological datasets. I earned ...

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USD 50/hr
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Dr. Carlos R.

Biotechnologist | Project Manager | Data Analyst | with 10+ years of experience in biomedical research
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USD 55/hr
Masters in Project Management
Panama

PhD in Biotechnology with over 15 years of experience in biomedical and biotechnological research. I specialize in multi-omics data analysis (R...

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USD 55/hr
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Nnachi N.

Environmental & GIS Data Analyst | Remote Sensing, GEE & Spatial Modelling Expert
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Masters of Science
Nigeria

I am an Environmental Scientist and GIS Specialist with strong expertise in geospatial analysis, remote sensing, and environmental data modelli...

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Abdul M.

Computer Engineer Specializing in Microcontrollers, IoT & Web Applications
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USD 20/hr
Computer engineering
Pakistan

I am a Computer Engineer with a strong passion for microcontrollers, embedded systems, and modern web development. I enjoy building smart, conn...

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USD 20/hr
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Shreya N.

Freelance Statistician, Researcher & Analyst | Expert in R, Python, SPSS, Advanced Excel, SQL | Res...
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USD 9/hr
M.Sc. Statistics and Data Science
India

Detail-oriented Statistician and Researcher with 1.5 years of experience in research design, statistical analysis, database management, and int...

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USD 9/hr
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Dr. Kuba O.

Neuromodulation Specialist | Adaptive DBS, Neural Modelling, Scientific Computing
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USD 35/hr
PhD in Control Theory
Ireland

I am a computational neuroscientist specialising in closed-loop neuromodulation, deep brain stimulation, and control-based approaches to brain ...

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USD 35/hr
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Naveen J.

AI Hardware & VLSI Architect | PhD Researcher | 5 Yrs Exp (Verilog, MATLAB) | Low-Complexity DSP & Neural Nets
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USD 20/hr
Master of Technology
India

I am a VLSI Architect and Researcher currently pursuing my PhD at NIT Calicut, specializing in VLSI architectures for Neural Networks. With 5 y...

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USD 20/hr
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Dr. Mehrta S.

Data Scientist and Scientific Data Analyst | Python, Statistics and Data Visualization
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USD 35/hr
Mathematical modelling
Austria

I am a data scientist and scientific data analyst with a background in computer science, mathematical modelling, statistics, and biological res...

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USD 35/hr
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Kolabtree is the leading online marketplace for SQL experts. Post your project, get bids, and hire qualified experts quickly and easily.

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We take several measures to help you work with full confidence and peace of mind.

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Restrict who can see your project and send you proposals. Invite only specific freelancers to view your project.

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Our T&C include a default confidentiality clause that protects your IP and NDA for added protection before disclosing project details.

Kolabtree ensures the safety and security of your payments, personal information and project details. Kolabtree’s T&C include a default confidentiality and NDA clause.

You will receive detailed proposals directly from Kolabtree. These proposals will include a comprehensive Statement of Work (SOW), project fees, milestones and deadlines.

You can choose to pay either a fixed or an hourly fee based on your scope of work. Pre-pay for the next milestone. You have to approve the deliverables only if the quality meets your expectations. If you aren't happy, we'll refund your money.

Kolabtree will share multiple quotations for your project. You have the freedom to accept the quote that aligns with your project requirement and budget. You can get in touch with us if you want to discuss the fee.

Our T&C include a default confidentiality clause that protects your IP and NDA for added protection.

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You have to approve the deliverables only if quality meets your expectations. If you aren't happy, we'll refund your money.

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Post your Project (Free)

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Pre-pay for your project and work with the expert to get your desired output. Keep track of files and conversations in the user-friendly Workspace.

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Job Done!

Approve the deliverables once you're satisfied with the job done.